```css
*{margin:0;padding:0;box-sizing:border-box;transition:background 0.3s,color 0.3s,border-color 0.3s,box-shadow 0.3s,transform 0.3s,opacity 0.3s;}html{scroll-behavior:smooth;font-size:16px;--primary:#1a73e8;--primary-light:#4a90e2;--primary-dark:#0d47a1;--accent:#ff6f00;--bg:#ffffff;--bg2:#f4f7fc;--text:#1a1a2e;--text2:#4a4a6a;--card-bg:#ffffff;--shadow:0 8px 30px rgba(0,0,0,0.08);--glass:rgba(255,255,255,0.7);--glass-border:rgba(255,255,255,0.3);--radius:24px;--radius-sm:12px;--max-w:1200px;--header-h:70px;--nav-bg:rgba(255,255,255,0.85);--footer-bg:#0d1b2a;--footer-text:#b0bec5;}body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,'Noto Sans SC',sans-serif;background:var(--bg);color:var(--text);line-height:1.6;min-height:100vh;overflow-x:hidden;}a{color:var(--primary);text-decoration:none;}a:hover{color:var(--primary-dark);}img,svg{max-width:100%;height:auto;display:block;}button{cursor:pointer;border:none;background:none;font:inherit;color:inherit;}.container{max-width:var(--max-w);margin:0 auto;padding:0 20px;width:100%;}section{padding:80px 0;}.section-title{font-size:2.2rem;font-weight:700;text-align:center;margin-bottom:12px;letter-spacing:-0.5px;}.section-sub{text-align:center;color:var(--text2);margin-bottom:48px;font-size:1.1rem;}.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;border-radius:50px;font-weight:600;font-size:1rem;background:var(--primary);color:#fff;border:2px solid transparent;transition:all 0.3s;}.btn:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 12px 28px rgba(26,115,232,0.3);}.btn-outline{background:transparent;border-color:var(--primary);color:var(--primary);}.btn-outline:hover{background:var(--primary);color:#fff;}.btn-accent{background:var(--accent);border-color:var(--accent);}.btn-accent:hover{background:#e65100;box-shadow:0 12px 28px rgba(255,111,0,0.3);}.glass-card{background:var(--glass);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid var(--glass-border);border-radius:var(--radius);box-shadow:var(--shadow);padding:32px;}.card{border-radius:var(--radius);background:var(--card-bg);box-shadow:var(--shadow);padding:28px;transition:transform 0.3s,box-shadow 0.3s;}.card:hover{transform:translateY(-6px);box-shadow:0 20px 40px rgba(0,0,0,0.12);}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:32px;}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}.flex-center{display:flex;align-items:center;justify-content:center;}.flex-between{display:flex;align-items:center;justify-content:space-between;}.text-center{text-align:center;}.mt-16{margin-top:16px;}.mt-24{margin-top:24px;}.mt-32{margin-top:32px;}.mb-16{margin-bottom:16px;}.mb-24{margin-bottom:24px;}.gap-12{gap:12px;}.gap-16{gap:16px;}.gap-24{gap:24px;}.header{position:fixed;top:0;left:0;width:100%;z-index:1000;height:var(--header-h);background:var(--nav-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid rgba(0,0,0,0.05);transition:background 0.4s,box-shadow 0.4s;}.header.scrolled{box-shadow:0 4px 20px rgba(0,0,0,0.08);}.header .container{display:flex;align-items:center;justify-content:space-between;height:100%;}.logo{font-size:1.6rem;font-weight:800;color:var(--primary);display:flex;align-items:center;gap:10px;}.logo svg{width:36px;height:36px;}.nav{display:flex;gap:8px;align-items:center;}.nav a{padding:8px 16px;border-radius:8px;font-weight:500;color:var(--text);position:relative;font-size:0.95rem;}.nav a:hover,.nav a.active{color:var(--primary);background:rgba(26,115,232,0.08);}.nav a::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:0;height:2px;background:var(--primary);transition:width 0.3s;}.nav a:hover::after,.nav a.active::after{width:60%;}.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px;}.hamburger span{width:28px;height:3px;background:var(--text);border-radius:4px;transition:0.3s;}.mobile-menu{display:none;position:fixed;top:var(--header-h);left:0;width:100%;height:calc(100vh - var(--header-h));background:var(--bg);z-index:999;padding:24px;overflow-y:auto;flex-direction:column;gap:12px;}.mobile-menu.open{display:flex;}.mobile-menu a{padding:14px 20px;border-radius:12px;font-size:1.1rem;font-weight:500;border-bottom:1px solid rgba(0,0,0,0.05);}.mobile-menu a:hover{background:rgba(26,115,232,0.06);}.hero{min-height:90vh;display:flex;align-items:center;position:relative;overflow:hidden;padding-top:var(--header-h);background:linear-gradient(135deg,#e3f2fd 0%,#bbdefb 50%,#e8eaf6 100%);}.hero-bg{position:absolute;inset:0;z-index:0;}.hero-bg svg{width:100%;height:100%;opacity:0.15;}.hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}.hero-text h1{font-size:3.2rem;font-weight:800;line-height:1.2;margin-bottom:20px;letter-spacing:-1px;}.hero-text h1 span{background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;}.hero-text p{font-size:1.2rem;color:var(--text2);margin-bottom:32px;max-width:520px;}.hero-actions{display:flex;gap:16px;flex-wrap:wrap;}.hero-visual{display:flex;justify-content:center;align-items:center;}.hero-visual svg{width:100%;max-width:480px;height:auto;filter:drop-shadow(0 20px 40px rgba(26,115,232,0.15));}.swiper{position:relative;overflow:hidden;border-radius:var(--radius);}.swiper-wrapper{display:flex;transition:transform 0.5s ease;}.swiper-slide{min-width:100%;padding:40px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;border-radius:var(--radius);display:flex;flex-direction:column;gap:16px;}.swiper-slide h3{font-size:1.8rem;}.swiper-pagination{display:flex;justify-content:center;gap:10px;margin-top:20px;}.swiper-pagination span{width:12px;height:12px;border-radius:50%;background:var(--text2);cursor:pointer;opacity:0.4;transition:0.3s;}.swiper-pagination span.active{opacity:1;background:var(--primary);width:32px;border-radius:6px;}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}.stat-item{text-align:center;padding:24px;}.stat-number{font-size:2.8rem;font-weight:800;color:var(--primary);}.stat-label{color:var(--text2);margin-top:8px;}.faq-item{border-bottom:1px solid rgba(0,0,0,0.08);padding:16px 0;}.faq-question{display:flex;justify-content:space-between;align-items:center;font-weight:600;cursor:pointer;padding:12px 0;}.faq-question::after{content:'+';font-size:1.5rem;transition:transform 0.3s;}.faq-item.open .faq-question::after{transform:rotate(45deg);}.faq-answer{max-height:0;overflow:hidden;transition:max-height 0.4s ease;padding-left:8px;color:var(--text2);}.faq-item.open .faq-answer{max-height:300px;padding-bottom:16px;}@media (prefers-color-scheme:dark){body{--bg:#0f172a;--bg2:#1e293b;--text:#e2e8f0;--text2:#94a3b8;--card-bg:#1e293b;--shadow:0 8px 30px rgba(0,0,0,0.4);--glass:rgba(30,41,59,0.7);--glass-border:rgba(255,255,255,0.08);--nav-bg:rgba(15,23,42,0.9);--footer-bg:#020617;}.hero{background:linear-gradient(135deg,#0f172a 0%,#1e293b 50%,#0d2137 100%);}.hero-text h1 span{background:linear-gradient(135deg,#60a5fa,#fbbf24);-webkit-background-clip:text;-webkit-text-fill-color:transparent;}.stat-number{color:#60a5fa;}.swiper-slide{background:linear-gradient(135deg,#1e3a5f,#0d2137);}}@media(max-width:1024px){.grid-4{grid-template-columns:repeat(2,1fr);}.hero .container{grid-template-columns:1fr;text-align:center;}.hero-text p{margin:0 auto 32px;}.hero-actions{justify-content:center;}.hero-visual{display:none;}.stats-grid{grid-template-columns:repeat(2,1fr);}}@media(max-width:768px){.nav{display:none;}.hamburger{display:flex;}.grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}.hero-text h1{font-size:2.2rem;}.section-title{font-size:1.8rem;}.stats-grid{grid-template-columns:1fr 1fr;}.header .container{padding:0 16px;}}@media(max-width:480px){.hero-text h1{font-size:1.8rem;}.btn{padding:12px 24px;font-size:0.9rem;}.container{padding:0 12px;}}.fade-up{opacity:0;transform:translateY(30px);transition:opacity 0.6s ease,transform 0.6s ease;}.fade-up.visible{opacity:1;transform:translateY(0);}.back-to-top{position:fixed;bottom:30px;right:30px;width:48px;height:48px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.5rem;box-shadow:0 4px 16px rgba(0,0,0,0.2);z-index:999;opacity:0;pointer-events:none;transition:0.3s;}.back-to-top.show{opacity:1;pointer-events:auto;}.back-to-top:hover{transform:translateY(-4px);}footer{background:var(--footer-bg);color:var(--footer-text);padding:60px 0 30px;}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;}.footer-col h4{color:#fff;margin-bottom:16px;font-size:1.1rem;}.footer-col a{color:var(--footer-text);display:block;margin-bottom:8px;font-size:0.95rem;}.footer-col a:hover{color:#fff;}.footer-bottom{border-top:1px solid rgba(255,255,255,0.08);margin-top:40px;padding-top:24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:0.9rem;}@media(max-width:768px){.footer-grid{grid-template-columns:1fr 1fr;}}@media(max-width:480px){.footer-grid{grid-template-columns:1fr;}}.breadcrumb{padding:16px 0;font-size:0.9rem;color:var(--text2);display:flex;flex-wrap:wrap;gap:8px;}.breadcrumb a{color:var(--primary);}.breadcrumb span{color:var(--text2);}.search-box{display:flex;gap:8px;max-width:400px;margin:0 auto;}.search-box input{flex:1;padding:12px 20px;border-radius:50px;border:1px solid rgba(0,0,0,0.1);background:var(--bg);color:var(--text);font-size:1rem;}.search-box button{padding:12px 24px;border-radius:50px;background:var(--primary);color:#fff;font-weight:600;}.article-card .read-more{color:var(--primary);font-weight:600;display:inline-flex;align-items:center;gap:6px;margin-top:12px;}.article-card .read-more:hover{color:var(--primary-dark);}.howto-step{display:flex;gap:16px;margin-bottom:24px;align-items:flex-start;}.howto-step .step-num{width:40px;height:40px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0;}.howto-step .step-content h4{font-weight:600;margin-bottom:4px;}
```